combined drill

• 组合钻头； 双用钻头,(谷物肥料)联合条播机

combined drill的用法和样例：

例句

1. Drilling is cutting a hole with a drill.
   钻削就是用钻头钻一个孔。
2. The factory was set up for drill production in TAI-CHUNG.
   于台中县青山设工厂，打造凿岩机用钻头。